Type: Blind plate flange - flat face, Flange spacing per ASME B16.5 Class 150 EXCEPT FOR THICKNESS, Constructed of ASTM A240 316 stainless plate steel or cast in conformance with ASTM A351, NPS Size: 1 inch, Outside Diameter (O.D.): 4.25 inch, Bolt Hole Center Diameter (B.H.C): 3.12 inch, Bolt Hole Diameter (B.H.): 0.625 inch, Flange Thickness (THK): 0.5 inch, Number of Bolt Holes: 4, Estimated Weight: 1.9 LBSS
Click here for a downloadable and printable specification sheet on class 150 spaced 316 stainless steel blind plate flanges